Eppendorf New Brunswick -86 °C Freezers G - Manual (Page 30)

HEF® and G -86 °C Freezers — Operating manual
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7.1.5 Door or lid seal
Be sure to treat the door or lid seal with care. Avoid damaging this seal in any way. The freezer
cannot operate properly with a defective seal.
 It is advisable to wipe both the seal and the surface against which it seals with a soft dry cloth
once a month.
7.2 Routine maintenance
7.2.1 Lubrication
Every 12 months the outer door hinges and the handle mechanism should be lightly lubricated
using general-purpose oil or spray grease.
7.2.2 Defrosting
After an extended period of operation, defrosting may become necessary:
1. De-activate the alarm by switching the battery (alarm) switch (located behind the lockable
panel on the front of the freezer) to off (O).
2. Unplug the freezer from the mains/electrical supply.
3. Leave the innner and outer doors or lids open.
4. Allow the accumulated ice to melt.
5. Mop up the resulting water.
6. Dry and decontaminate the interior of the freezer.
7. When defrosting is complete, reconnect the freezer to the mains/electrical supply.
8. Turn the mains/power switch on (I) and re-activate the battery (alarm) switch.
7.2.3 Removing the inner doors (upright freezers except U725-G)
The inner doors of the freezer can be removed for defrosting and cleaning. To remove the inner
doors of the upright freezers (except U725-G):
1. Fully open the outer door of the freezer.
2. Unscrew the door hinges.
1 Plunger 2 Cover
3 Freezer outer wall
1 2 3
NOTICE!
Risk of material damage
 Do not attempt to chip or scrape the ice with a sharp instrument. Allow the ice to melt
naturally.
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Maintenance